20474698679 has 8 divisors (see below), whose sum is σ = 20737455360. Its totient is φ = 20212031736.

The previous prime is 20474698637. The next prime is 20474698687. The reversal of 20474698679 is 97689647402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20474698679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20474698609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520352 + ... + 558314.

It is an arithmetic number, because the mean of its divisors is an integer number (2592181920).

Almost surely, 2^20474698679 is an apocalyptic number.

20474698679 is a deficient number, since it is larger than the sum of its proper divisors (262756681).

20474698679 is an equidigital number, since it uses as much as digits as its factorization.

20474698679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44869.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 20474698679 in words is "twenty billion, four hundred seventy-four million, six hundred ninety-eight thousand, six hundred seventy-nine".